Okay, let me try to explain the brilliant nuance behind this cartoon for some of our slower readers (Chris W, I'm looking in your direction):
You see, A-Rod is now even more hated than he was last year due to his recent admission of steroid use. "But Jack, why in the cartoon does A-Rod still has plenty of zealous fans, despite being exposed as a lying cheater?" you ask. It's quite simple, look closely at those "A-Rod fans." What common themes do we notice?
They're all ripped; the men wear skin tight shirts (some without sleaves), and the women wear bikinis highlighting their androgenous physique.
So if A-Rod is hated by almost all fans, but still has a large following among muscular, image conscious men, and huge women, then we must conclude that A-Rod's only fans are:
Gays and women who are more masculine than A-Rod himself! And no one wants those social pariahs as fans! Get it!? Hysterical!